All categories

3 years ago

A + heat -> B endothermic reaction ΔH (+)

1 answer:

3 0

The best and most correct answer among the choices provided by your question is the second choice.

Based on the reaction given above, as the temperature decreases, the formation of the reactants will increase.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

You might be interested in

How many significant figures are in the number 0.00230? O 6

EleoNora [17]

Answer:

0.00230 = 3 significant figures

Explanation:

Significant digits or figures of a given number are the digits or figures that have meaning and contributes to the precision of the given number.

Therefore, 0.00230 = 3 significant figures.

Reason: The non-zeros figures and the trailing zero after the decimal are significant. Whereas, all the leading zeros are not considered significant.

4 0

3 years ago

Okay so this is half math half chemistry...

AleksandrR [38]

So you need to find the volume in L? If so:
Convert the mass of Lithium Bromide into moles by dividing the 100 grams by the molar mass of LiBr, taken from the periodic table
In a solution, moles = (concentration in mole/L) x (volume in L)
We know the moles, we have the concentration in mole/L, now find the volume in L, and you should get 0.288. Plz do the math and check for yourself

3 0

3 years ago

2 Holts

Luda [366]

A. They are the most destructive earthquake waves.

D. They can move in a rolling pattern through rock, like an ocean wave.

Explanation:

Surface waves are seismic waves that cause the most destruction during an earthquake.

Rayleigh waves are known to cause rolling pattern of rocks just like an ocean waves.

Seismic waves are elastic waves that notably transmits energy.
They usually accompany earthquakes.
There are two broad categories of these waves.
Surface and body waves.
Seismic surface waves are low frequency and long wavelength waves.
They travel very close to the surface.
They are made up of Love and Rayleigh waves.
Love waves travels laterally in a horizontal fashion.
Rayleigh waves rolls like ocean waves in the ground.
The bulk of the destruction caused during an earthquakes is due to these waves.
They are the last waves to arrive a seismic station

learn more:

Seismograph brainly.com/question/11292835

#learnwithBrainly

7 0

3 years ago

A sample of helium gas has a pressure of 1.20 atm at 22°c. at what celsius temperature will the helium reach a pressure of 2.00

sukhopar [10]

Gay-Lussac's law gives the relationship between pressure and temperature of a gas.
it states that for a fixed amount of gas of constant volume pressure is directly proportional to temperature.
P/T = k
where P - pressure, T - temperature and k - constant
$\frac{P1}{T1} = \frac{P2}{T2}$
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation.
temperature should be in the kelvin scale,
T1 = 22 °C + 273 = 295 K
substituting the values in the equation
$\frac{1.20atm}{295 K} = \frac{2.00 atm}{T}$
T = 492 K
new temperature - 492 - 273 = 219 °C

5 0

3 years ago

HELP PLS !!!! :))Formula unit of Sr and CI Formula unit of AI and S

xenn [34]

Answer : The formula unit of Sr & Cl is $SrCl_2$ and the formula unit of Al & S is $Al_2S_3$

Explanation :

Formula unit : it is defined as the lowest number ratio of ions of an elements in an ionic compound or covalent compound.

For the formula unit of Sr & Cl, two chloride ions $(Cl^-)$ are needed to neutralize the one strontium ion $(Sr^{2+})$ .

For the formula unit of Al & S, three sulfide ions $(S^{2-})$ are needed to neutralize the two aluminium ion $(Al^{3+})$ .

The formula unit of $SrCl_2$ and $Al_2S_3$ are shown below.

4 0

3 years ago